Dental vulcanizer



H. L.-WYGER'T.

DENTAL VULCANIZ ER.

APPLICATION FILED JUNE'14, 1921.

1,401,933, Patented Dec. 27, 1921.

STATES HENRY LOUIS WYGERT, OF ALBANY, NEVT YORK.

DENTAL VULCANIZER.

To all whom it may concern: 7

Be it known that I, HENRY L. VVYGERT, a citizen of the United States of America, and resident of Albany, in the county of Albany and State of New York, have invented certain new and useful Improvements in Denvulcanizers in which provision is made for conserving the heat or steam which has been generated during the vulcanizing process, pending the completion of repairs to the usual safety disk employed in connection with such vulcanizers, it being understood that the safety disks are provided to resist pressure below that which would prove dangerous, and the said disks being adapted to be fractured or blown upon the development of abnormal pressure within the vulcanizing machine. I

It is an object of this invention to provide novel means actuated by the pressure released after the fracture of a disk for inter rupting the supply of gases or other fuel which'may be used in heating the vulcanizer; the said device also contemplating the provision of novelmeans whereby a safety disk may be applied to replace the fractured one without the loss ofthe steam charge which has been developed during the vulcanizing process. By reason of this invention, therefore,the vulcanizing process continues while the disk is being replaced, and

p the steam within the vulcanizer is not'reduced in temperature to an appreciable extent during the shorttime required for replacing the safety disk under this method. Heretofore, with many of the vulcanizers in common use, the fracture of the safety disk results in the discharge of the steam within the vulcanizer to a degree which interrupts the curing of the rubber, and as the process is carried on usually over a period of more than an hour, the time consumed prior to the blowing of the safety disk has been a complete loss, whereas by the present invention, the curing process is continued pending the repairing, as has been stated.

A still further object of this invention is to produce an attachment for vulcanizers in which an audible signal 1s operated in case the safety disk is blown, and simul- Specification of Letters Patent. Pat t d D 2 1921. Application filed June 14,

1921. Serial No. 477,454.

taneous ly therewith, the flow of the fuelis interrupted.

lVith the foregoing and other objects 'in view, the invention consists in the details of construction, and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

in describing the invention in detail, reference will be had to the accompanying drawings forming part of this application wherein like characters denote corresponding parts in the several views, and in which, i

Figure 1 illustrates a sectional viewiof the head of a vulcanizer, showing the device embodying the invention applied thereto; 7

Fig. 2 illustrates .a perspective view of a safety disk; and V r Fig. 3 illustrates a diskretaining plug,

In these, drawings 5 denotes a conventional head of a vuleanizer havinga threaded nipple 6 to be secured to the body of the vulcanizer, the said nipple having a pas sage therethrough :as at 7, terminating in branch ducts 8 and 9, one of which leads to a blow-off valve 10 whichmay 'be employed when the charge is to be exhausted from the vulcanizer and the other of which is in communication with a coupling 11 in the nature of a valve casing having a valve 12 therein, which may be turned to establish communication through the coupling when the port 13 of the plug registers with. the passage 14:- in the coupling, or to interrupt communication through. the said pasage'when the valve is in the position shown in Fig.1; The coupling 11 has a nipple l5.threa'ded into the head and a seat 16 in its outer end for the safety disk 17, which has the characteristics heretofore indicated, the said disk being held on its seat by an apertured plug 18 which has a reduced portion 19 fitting in the seat of the disk and bearing thereon. A pipe 20 is connected to the outer end of the coupling 11 and it preferably has a bore 21 of the size of the opening through the coupling, said pipe having an enlarged bore 22' at its outer portion where it is connected to or merges with a fuel supply pipe 23; The fuel supply ipe has a connection 24 with thesource of fuel supply and a jet or nozzle 25 for delivering the fuel to be burned during the vul- 'canizing process.

There is, in the present embodiment of the invention, an inclined valve seat 26 in the pipe 20 atthe'junotion of the reduced and larger bore, and this valve seat has a valve 27 normally lying on it which interrupts communication between the small and large channels in the pipe 20. The valve 27 isoscillatably mounted as on a pivot 28, and it has an arm 29 which oscillates under the influence of the valve. .When the parts are in normal positions, the valve 12 will be in po- "sition to establish communication through the passage 14 of the coupling, the pressure being sustained by the safety disk 17, under normalconditions of use. 7 Should the pressure within the vulcanizer become abnormal, the disk will be fractured 1 and hence, the steam pressure will tend to lift the valve 27, and as the pipe 20 has a valve seat vtherein to be engaged by the valve 27, the escape of'steam will be prevented. The valve is only temporary for,

" use in holding steam, since it is the purpose of the inventor that steam which has escaped through thelsafety disk shall operate as-ignal 31, so that an attendant may close the valve 12 andinterrupt the escape of steam from the vulcaniz'er, The operation of the valve'27, however, servesto close a valve 32 in thefuel supply pipe '23, through the ,7 means of the arm 33 connected to the pintle 34 of the said valve 32, there being links 35 and 35 interposed betweenthe arms 29 the'vulcanizer. When the parts are to be,

to a stud 38, and the said and 33, as fully'shown in the drawings, the said linksbeing oscillatable on a pivot 36. A spring 37 is connected to the arm 33 and spring normally exerts a pull onthe arm 33; i

The operation of the device has been indicated, in connection with a description of the elements, and one skilled in the art will, it

is thought, understand theapplication in use of the said invention. 1 o

Whenan attendant closes the valve '12, he

may disconnectthe pi e 20 from the cou-' pling and renew the sa .ety disk, and as this can beaccomplished expeditiously, there is no appreciable interruption of the firing of restored to their normal conditions for op eration, and the disk has been replaced and theparts restored to normal positions, the

tension is taken off of the spring 37 and the valve 12 is opened slowly in order to obviate valve coupling connected to a discharge opening ofthe vulcaniaer, a safety disk beyondthe valve of the coupling,means for holding the disk in place, a pipe in communication beyond the plisk, said pipe hav:

ing a valve seat therein, the said valve being operated bypressure. of steam escaping through the coupling, a fuel supplyvpipe, a valve therein, and means for communicating motion of the valve in the first mentioned pipe to the valve in the'fuel pipe. for closing the last mentiond valve, and means for bold ing the valve closed.

2. In a safetydevice for vulcanizers, a valve coupling connected to a discharge opening of the vuleanizer, a safety disk beyond the valve of the coupling, means for munication beyond thedisk, said pipe having a valve seat therein, the said valve being operated by pressure of steam escaping through the coupling? fuel supply pipe, a valve therein, and means for communicating motion of the valve in the firstrnentioned pipe to the valve in the fuel pipe for closing the last mentioned valve, means for holding the valve closed, and a signal between the coupling and the valve in the first mentioned pipe. 7 v V 3. In a safety device for vulcanizers, a

coupling having a passage therethrough connected with the steam chamber of the vulcanizer, a valve for closing the passage through the coupling, a safety disk for guarding the passage through the, said coupling, a pipe in communication with vthe coupling beyond the safety'dislga valve in the said pipe actuated by'steam escaping through. said pipe, a fuel supplying pipe for the vulcanizer, a valve therein, and meansfor cormnunicatingthe motion of the valve in the pipe to thevalve in the fuel supplying pipe.

HENRY LOUIS WYGERT.

holding the disk in place, a pipe in com- 7 

